One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,9,11,6)(4,7,13,12)(10,15,16,14)(17,18)(19,24)(20,31)(21,25)(22,26)(23,27)(28,29)(30,32)(33,34,37,38)(35,41,43,39)(36,40,45,44)(42,47,48,46)(1,2)(3,6)(4,7)(5,8)(9,11)(10,14)(12,13)(15,16)(17,19,23,30)(18,24,27,32)(20,21,26,28)(22,29,31,25)(34,38)(39,41)(40,44)(46,47)(17,20,23,26)(18,22,27,31)(19,28,30,21)(24,25,32,29)(33,35)(34,39)(36,42)(37,43)(38,41)(40,46)(44,47)(45,48)(1,2)(3,6)(4,12)(5,8)(7,13)(9,11)(10,15)(14,16)(17,19)(18,24)(20,28)(21,26)(22,25)(23,30)(27,32)(29,31)(33,34)(35,39)(36,44)(37,38)(40,45)(41,43)(42,47)(46,48) involution — undirected(1,3,5,11)(2,6,8,9)(4,10,13,16)(7,14,12,15)(17,21,23,28)(18,25,27,29)(19,26,30,20)(22,32,31,24)(1,4,5,13)(2,7,8,12)(3,10,11,16)(6,14,9,15)(17,22)(18,26)(19,29)(20,27)(21,32)(23,31)(24,28)(25,30)(33,36,37,45)(34,40,38,44)(35,42,43,48)(39,46,41,47)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.